I'm sorry but yes you are mistaken. The vulgar tongue was not a recognized form of the Old Tongue.
It was the degeneration of the old tongue into the language that is known as the New Tongue spoken as it stands today. It was what the new language springing up what known by at the time before...
I hate to shoot someone down with only one post, but you're mistaken about a lot of that.
There is no such thing as the variations of the Old Tongue as you have described.
I believe you may be mixing things up with Common, Plain and High Chants. Which are only different means of recitation...
The Old Tongue can basically be compared to the Common tongue as Latin is to Modern Italian. However even more so.
Good way to remember it.
Which is why the Forsaken could pick up the Common pretty easily being well versed in the language it evolved from.
Agreed its not a dialect for the...